thats so awsome, i picked up some old moeller plc a while back for like 25 bucks, problem is the cable is legacy, and they want like 100 bucks for it now...
i think im going to buy the click plc with the 2 analog inputs at some point. ill definatly have some questions for you big time. id like to be able to integrate a PLC into a fertigation controller im building useing a
EXA DC402, and a
Hach GLI 53. id like to be able to have the PLC sorta sequence or interlock the two analyzers outputs, so i could for example ... have the plc hold the PH correction while the DC402 is dosing fertilziers. id also like to be able to like at the push of a button get the plc to dump the tanks,hold the outputs and light up a badass stacklight or something to show an error state. theres actually too much that id like to be able to mess with ...im not sure how much i can do and what have you with 0 experiance programming these things.
the GLI 53 actually has an optional HART communications output for temperature and PH, but i cant seem to find anyway to get that information into a PLC. ill definatly pm you if you dont mind, when i get to assembleing this... i have everything i need just need to finish another project first.
you are going to use some sort of laser/ photo sensor? sounds awsome, but i wonder if you could not just use some of those cheep PIR motion occupancy sensors u can get them for like 25 bucks if i remember right. Idk what they output tho...i bet they just tip over a relay or something.